Portable storage unit



FIG. 1 is a perspective view of a portable storage unit constructed in accordance with a preferred embodiment of the present invention.

FIG. 2 is top plan view of the unit of FIG. 1.

FIG. 3 is a side view of the unit of FIG. 1.

FIG. 4 is an end view of the unit of FIG. 1; and,

FIG. 5 is bottom plan view of the unit of FIG. 1. 

The ornamental design for a protable storage unit, as shown and described. 